diff --git a/src/controllers/CommandController.ts b/src/controllers/CommandController.ts
index 3f1f1858..e164f973 100644
--- a/src/controllers/CommandController.ts
+++ b/src/controllers/CommandController.ts
@@ -44,6 +44,7 @@ import {
   checkExceptCommandType,
   checkCommandType,
   removePostMasterAct,
+  logPositionIsSelectedChange,
 } from "../interfaces/utils";
 import { Position } from "../entities/Position";
 import { PosMaster } from "../entities/PosMaster";
@@ -3751,6 +3752,13 @@ export class CommandController extends Controller {
           },
         });
         if (positionOld != null) {
+          logPositionIsSelectedChange(positionOld.id, positionOld.positionIsSelected, false, {
+            posMasterId: posMasterOld?.id,
+            userId: request.user.sub,
+            endpoint: "updateMaster",
+            action: "command_change_reset_old_position",
+          });
+
           positionOld.positionIsSelected = false;
           await this.positionRepository.save(positionOld);
         }
@@ -3762,10 +3770,23 @@ export class CommandController extends Controller {
           },
         });
         if (checkPosition.length > 0) {
-          const clearPosition = checkPosition.map((positions) => ({
-            ...positions,
-            positionIsSelected: false,
-          }));
+          console.log(
+            `[positionIsSelected-DEBUG] Command change: clearing ${checkPosition.length} positions (posMasterId: ${posMaster.id}, userId: ${request.user.sub}, endpoint: updateMaster)`
+          );
+
+          const clearPosition = checkPosition.map((positions) => {
+            logPositionIsSelectedChange(positions.id, positions.positionIsSelected, false, {
+              posMasterId: posMaster.id,
+              userId: request.user.sub,
+              endpoint: "updateMaster",
+              action: "command_change_clear_positions",
+            });
+
+            return {
+              ...positions,
+              positionIsSelected: false,
+            };
+          });
           await this.positionRepository.save(clearPosition);
         }
 
diff --git a/src/controllers/PositionController.ts b/src/controllers/PositionController.ts
index efcd1497..2f23bdaa 100644
--- a/src/controllers/PositionController.ts
+++ b/src/controllers/PositionController.ts
@@ -38,7 +38,7 @@ import { EmployeePosLevel } from "../entities/EmployeePosLevel";
 import { AuthRole } from "../entities/AuthRole";
 import { RequestWithUser } from "../middlewares/user";
 import permission from "../interfaces/permission";
-import { resolveNodeLevel, setLogDataDiff } from "../interfaces/utils";
+import { resolveNodeLevel, setLogDataDiff, logPositionIsSelectedChange } from "../interfaces/utils";
 import { getPosMasterNo, getOrgFullName } from "../utils/org-formatting";
 import { PosMasterAssign } from "../entities/PosMasterAssign";
 import { Assign } from "../entities/Assign";
@@ -1427,7 +1427,17 @@ export class PositionController extends Controller {
       requestBody.positions.map(async (x: any) => {
         const match = posMaster.positions.find((p: any) => p.id == x.id);
         if (match) {
-          match.positionIsSelected = x.positionIsSelected ?? false;
+          const oldValue = match.positionIsSelected;
+          const newValue = x.positionIsSelected ?? false;
+
+          logPositionIsSelectedChange(match.id, oldValue, newValue, {
+            posMasterId: posMaster.id,
+            userId: request.user.sub,
+            endpoint: "updateMaster",
+            action: "update_position",
+          });
+
+          match.positionIsSelected = newValue;
           match.orderNo = x.orderNo ?? null;
           return match;
         } else {
@@ -4034,7 +4044,18 @@ export class PositionController extends Controller {
       statusReport: "PENDING",
     });
 
+    console.log(
+      `[positionIsSelected-DEBUG] Deleting holder, resetting ALL positions to false (posMasterId: ${id}, userId: ${request.user.sub}, endpoint: deleteHolder)`
+    );
+
     dataMaster.positions.forEach(async (position) => {
+      logPositionIsSelectedChange(position.id, position.positionIsSelected, false, {
+        posMasterId: id,
+        userId: request.user.sub,
+        endpoint: "deleteHolder",
+        action: "delete_holder_reset_positions",
+      });
+
       await this.positionRepository.update(position.id, {
         positionIsSelected: false,
       });
diff --git a/src/interfaces/utils.ts b/src/interfaces/utils.ts
index 347f28af..be2f3bf9 100644
--- a/src/interfaces/utils.ts
+++ b/src/interfaces/utils.ts
@@ -751,4 +751,23 @@ export function resolveNodeId(data: any) {
     data.rootDnaId ??
     null
   );
+}
+
+export function logPositionIsSelectedChange(
+  positionId: string,
+  oldValue: boolean,
+  newValue: boolean,
+  context: {
+    posMasterId?: string;
+    userId?: string;
+    endpoint?: string;
+    action?: string;
+  }
+) {
+  if (oldValue !== newValue) {
+    console.log(`[positionIsSelected-DEBUG] Position ${positionId}: ${oldValue} -> ${newValue}`, {
+      ...context,
+      timestamp: new Date().toISOString(),
+    });
+  }
 }
\ No newline at end of file